There is an auto limit devs can bypass upon request.
Apple auto-limit caps how much RAM an app can use, even when it’s less than half of the total. RAM access can be expanded if Kuro requests it.
Devs were only recently given the ability to request more RAM access. Kuro may be unaware of this.
Also wanted to point out that PGR seems to lag much much after recent PGR updates (not iOS updates) on both my iPhone and iPad.